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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Interfacial interactions between 304L stainless steel and Zy-4 alloy during isothermal holdings at 1050 degrees C
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Interfacial interactions between 304L stainless steel and Zy-4 alloy during isothermal holdings at 1050 degrees C

机译：在1050摄氏度的等温控过程中304L不锈钢和ZY-4合金之间的界面相互作用

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摘要

The transition from solid-state bonding of the stainless steel 304L (SS) with Zircaloy-4 (Zy-4) to a partial liquid phase bonding is very important for the bonding process at 950-1050 degrees C. Previous studies demonstrate that the growth rate of the reaction product zone (RPZ) at 1050 degrees C show an intermediate behaviour which is interesting from an industrial point of view regarding the partial phase bonding process. In this work, the interfacial interactions between SS and Zy-4 during isothermal holdings at 1050 degrees C are studied for holding times up to 45 min. Diffusion couples were characterized by ESEM-EDS-EBSD and EPMA techniques. The RPZ consists of three layers: the first layer LI consists of alpha-(Fe,Cr) phase and its thickness increases very slightly with the holding time. On the contrary, the thickness, the morphology and the nature of the phases formed in the LII and LIII layers strongly depend on the interaction time. Based on the experimental results of this study, a schematic evolution of SS/Zy-4 system and mechanisms of interfacial interactions during isothermal holdings at 1050 degrees C are proposed. This study leads to a better understanding of the complex phenomena intervening in the SS/Zy-4 joining process which is very useful for applications in industrial scale. (C) 2019 Elsevier B.V. All rights reserved.
机译：从不锈钢304L（SS）的固态键合与锆瓦洛-4（ZY-4）的过渡到部分液相键合对于粘合过程非常重要，在950-1050℃下对粘合过程非常重要。之前的研究表明生长在1050℃下反应产物区（RPZ）的速率显示了来自关于部分相结合过程的工业观点的中间行为。在这项工作中，研究了1050摄氏度在1050摄氏度期间SS和ZY-4之间的界面相互作用，用于保持高达45分钟的时间。通过ESEM-EDS-EBSD和EPMA技术表征扩散耦合。 RPZ由三层组成：第一层Li由α-（Fe，Cr）相位，其厚度与保持时间非常略微增加。相反，厚度，形态和在LiI和LiII层中形成的相的性质强烈取决于相互作用时间。基于本研究的实验结果，提出了SS / ZY-4系统的示意性演化和1050摄氏度的等温控过程中的界面相互作用机制。该研究导致更好地了解SS / ZY-4加入过程中的复杂现象，这对于工业规模的应用非常有用。 （c）2019 Elsevier B.v.保留所有权利。

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